/*
 * Copyright (c) 2022-2025 KCloud-Platform-IoT Author or Authors. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

/*
 * Copyright 1999-2022 Alibaba Group Holding Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.alibaba.nacos.plugin.datasource.impl.postgresql;

import com.alibaba.nacos.common.utils.CollectionUtils;
import com.alibaba.nacos.common.utils.NamespaceUtil;
import com.alibaba.nacos.plugin.datasource.constants.DataSourceConstant;
import com.alibaba.nacos.plugin.datasource.constants.FieldConstant;
import com.alibaba.nacos.plugin.datasource.mapper.GroupCapacityMapper;
import com.alibaba.nacos.plugin.datasource.model.MapperContext;
import com.alibaba.nacos.plugin.datasource.model.MapperResult;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

/**
 * The postgresql implementation of {@link GroupCapacityMapper}.
 *
 * @author lixiaoshuang
 * @author laokou
 */
public class GroupCapacityMapperByPostgresql extends AbstractMapperByPostgresql implements GroupCapacityMapper {

	@Override
	public String getDataSource() {
		return DataSourceConstant.POSTGRESQL;
	}

	@Override
	public MapperResult select(MapperContext context) {
		String sql = "SELECT id, quota, 'usage', max_size, max_aggr_count, max_aggr_size, group_id FROM group_capacity "
				+ "WHERE group_id = ?";
		return new MapperResult(sql, Collections.singletonList(context.getWhereParameter(FieldConstant.GROUP_ID)));
	}

	@Override
	public MapperResult insertIntoSelect(MapperContext context) {
		List<Object> paramList = new ArrayList<>();
		paramList.add(context.getUpdateParameter(FieldConstant.GROUP_ID));
		paramList.add(context.getUpdateParameter(FieldConstant.QUOTA));
		paramList.add(context.getUpdateParameter(FieldConstant.MAX_SIZE));
		paramList.add(context.getUpdateParameter(FieldConstant.MAX_AGGR_COUNT));
		paramList.add(context.getUpdateParameter(FieldConstant.MAX_AGGR_SIZE));
		paramList.add(context.getUpdateParameter(FieldConstant.GMT_CREATE));
		paramList.add(context.getUpdateParameter(FieldConstant.GMT_MODIFIED));

		String sql = "INSERT INTO group_capacity (group_id, quota, 'usage', max_size, max_aggr_count, max_aggr_size,gmt_create,"
				+ " gmt_modified) SELECT ?, ?, count(*), ?, ?, ?, ?, ? FROM config_info";
		return new MapperResult(sql, paramList);
	}

	@Override
	public MapperResult insertIntoSelectByWhere(MapperContext context) {
		final String sql = "INSERT INTO group_capacity (group_id, quota, 'usage', max_size, max_aggr_count, max_aggr_size, gmt_create,"
				+ " gmt_modified) SELECT ?, ?, count(*), ?, ?, ?, ?, ? FROM config_info WHERE group_id=? AND tenant_id = '"
				+ NamespaceUtil.getNamespaceDefaultId() + "'";
		List<Object> paramList = new ArrayList<>();
		paramList.add(context.getUpdateParameter(FieldConstant.GROUP_ID));
		paramList.add(context.getUpdateParameter(FieldConstant.QUOTA));
		paramList.add(context.getUpdateParameter(FieldConstant.MAX_SIZE));
		paramList.add(context.getUpdateParameter(FieldConstant.MAX_AGGR_COUNT));
		paramList.add(context.getUpdateParameter(FieldConstant.MAX_AGGR_SIZE));
		paramList.add(context.getUpdateParameter(FieldConstant.GMT_CREATE));
		paramList.add(context.getUpdateParameter(FieldConstant.GMT_MODIFIED));

		paramList.add(context.getWhereParameter(FieldConstant.GROUP_ID));

		return new MapperResult(sql, paramList);
	}

	@Override
	public MapperResult incrementUsageByWhereQuotaEqualZero(MapperContext context) {
		return new MapperResult(
				"UPDATE group_capacity SET 'usage' = 'usage' + 1, gmt_modified = ? WHERE group_id = ? AND 'usage' < ? AND quota = 0",
				CollectionUtils.list(context.getUpdateParameter(FieldConstant.GMT_MODIFIED),
						context.getWhereParameter(FieldConstant.GROUP_ID),
						context.getWhereParameter(FieldConstant.USAGE)));
	}

	@Override
	public MapperResult incrementUsageByWhereQuotaNotEqualZero(MapperContext context) {
		return new MapperResult(
				"UPDATE group_capacity SET 'usage' = 'usage' + 1, gmt_modified = ? WHERE group_id = ? AND 'usage' < quota AND quota != 0",
				CollectionUtils.list(context.getUpdateParameter(FieldConstant.GMT_MODIFIED),
						context.getWhereParameter(FieldConstant.GROUP_ID)));
	}

	@Override
	public MapperResult incrementUsageByWhere(MapperContext context) {
		return new MapperResult("UPDATE group_capacity SET 'usage' = 'usage' + 1, gmt_modified = ? WHERE group_id = ?",
				CollectionUtils.list(context.getUpdateParameter(FieldConstant.GMT_MODIFIED),
						context.getWhereParameter(FieldConstant.GROUP_ID)));
	}

	@Override
	public MapperResult decrementUsageByWhere(MapperContext context) {
		return new MapperResult(
				"UPDATE group_capacity SET 'usage' = 'usage' - 1, gmt_modified = ? WHERE group_id = ? AND 'usage' > 0",
				CollectionUtils.list(context.getUpdateParameter(FieldConstant.GMT_MODIFIED),
						context.getWhereParameter(FieldConstant.GROUP_ID)));
	}

	@Override
	public MapperResult updateUsage(MapperContext context) {
		return new MapperResult(
				"UPDATE group_capacity SET 'usage' = (SELECT count(*) FROM config_info), gmt_modified = ? WHERE group_id = ?",
				CollectionUtils.list(context.getUpdateParameter(FieldConstant.GMT_MODIFIED),
						context.getWhereParameter(FieldConstant.GROUP_ID)));
	}

	@Override
	public MapperResult updateUsageByWhere(MapperContext context) {
		return new MapperResult(
				"UPDATE group_capacity SET 'usage' = (SELECT count(*) FROM config_info WHERE group_id=? AND tenant_id = '"
						+ NamespaceUtil.getNamespaceDefaultId() + "')," + " gmt_modified = ? WHERE group_id= ?",
				CollectionUtils.list(context.getWhereParameter(FieldConstant.GROUP_ID),
						context.getUpdateParameter(FieldConstant.GMT_MODIFIED),
						context.getWhereParameter(FieldConstant.GROUP_ID)));
	}

	@Override
	public MapperResult selectGroupInfoBySize(MapperContext context) {
		String sql = "SELECT id, group_id FROM group_capacity WHERE id > ? LIMIT ?";
		return new MapperResult(sql, CollectionUtils.list(context.getWhereParameter("id"), context.getPageSize()));
	}

}
